donno?
Trade Winds were used by early sailors.
Two inventions that aided in early exploration were the compass, which allowed sailors to navigate based on the Earth's magnetic field, and the astrolabe, which helped sailors determine their latitude by measuring the angle of celestial bodies above the horizon.
Early navigational tools of European explorers included the compass, astrolabe, and quadrant. These tools helped sailors determine their direction, latitude, and altitude while at sea, making it possible to navigate accurately across oceans.
By Using the sun, moon and stars
Compass helped the explorers
the answer is IT HELPED TO PROVE THAT THE EARTH IS ROUND!!!!!!
The development of the lateen sail, the rudder, and the astrolabe gave sailors a means to navigate in open water.
Earth is round
Plow and irrigation system
Early sailors would get both a pig and a rooster. One on each foot.
* The presence of seabirds would indicate the location and distance of land masses.* It is known ancient sailors were able to navigate by the use of stars.* Early mariners may have known that ocean currents vary during different times of the year.
They were regularly visited by explorers and other sailors. So they would have items to trade and buy. Theirs your answer. Hope it helped :)